参数资料
型号: MPC8240LZU250X
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 250 MHz, RISC PROCESSOR, PBGA352
封装: TBGA-352
文件页数: 16/52页
文件大小: 542K
代理商: MPC8240LZU250X
MPC8240 (rev0.5) Hardware Specifications
23
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Electrical and Thermal Characteristics
Table 13 provides the I2C Frequency Divider Register (I2CFDR) information for the MPC8240.
Notes:
1
Values are in KHz unless otherwise specied.
2
FDR Hex and Divider (Dec) values are listed in corresponding order.
3
Multiple Divider (Dec) values will generate the same input frequency but each Divider (Dec) value will
generate a unique output frequency as shown in Table 14.
Table 13. MPC8240 Maximum I2C Input Frequency
FDR Hex2
Divider2 (Dec)
Max I2C Input Frequency1
SDRAM_CLK
@ 25 MHz
SDRAM_CLK
@ 33 MHz
SDRAM_CLK
@ 50 MHz
SDRAM_CLK
@ 100 MHz
20, 21
160, 192
862
1.13 MHz
1.72 MHz
3.44 MHz
22, 23, 24, 25
224, 256, 320, 384
555
733
1.11 MHz
2.22 MHz
0, 1
288, 320
409
540
819
1.63 MHz
2, 3, 26, 27, 28,
29
384, 448, 480, 512,
640, 768
324
428
649
1.29 MHz
4, 5
576, 640
229
302
458
917
6, 7, 2A, 2B, 2C,
2D
768, 896, 960, 1024,
1280, 1536
177
234
354
709
8, 9
1152, 1280
121
160
243
487
A, B, 2E, 2F,
30, 31
1536, 1792, 1920,
2048, 2560, 3072
92
122
185
371
C, D
2304, 2560
62
83
125
251
E, F, 32, 33,
34, 35
3072, 3584, 3840,
4096, 5120, 6144
47
62
95
190
10, 11
4608, 5120
32
42
64
128
12, 13, 36, 37,
38, 39
6144, 7168, 7680,
8192, 10240, 12288
24
31
48
96
14, 15
9216, 10240
16
21
32
64
16, 17, 3A,
3B, 3C, 3D
12288, 14336, 15360,
16384, 20480, 24576
12
16
24
48
18, 19
18432, 20480
8
10
16
32
1A, 1B, 3E,
3F
24576, 28672, 30720,
32768
6
8
12
24
1C, 1D
36864, 40960
4
5
8
16
1E, 1F
49152, 61440
3
4
6
12
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